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Full Discussion: awk !seen[$]++ in else loop
Top Forums UNIX for Beginners Questions & Answers awk !seen[$]++ in else loop Post 303030928 by rdrtx1 on Tuesday 19th of February 2019 10:35:13 AM
Old 02-19-2019
The original statement contains a grep which will reduce the lines on the output shown. Not sure how much this helps (I added tabs manually to the post to test):

Code:
sort -u -k 5,5 input_file | awk -F "\t" '(!seen[$12]++ || ! length($12)) && /IPR013087/'

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LEARN ABOUT HPUX

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
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